CN112008228A - Aluminum honeycomb plate and welding method thereof - Google Patents
Aluminum honeycomb plate and welding method thereof Download PDFInfo
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- CN112008228A CN112008228A CN202010881220.5A CN202010881220A CN112008228A CN 112008228 A CN112008228 A CN 112008228A CN 202010881220 A CN202010881220 A CN 202010881220A CN 112008228 A CN112008228 A CN 112008228A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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Abstract
The invention relates to the technical field of structural materials, in particular to an aluminum honeycomb plate and a welding method thereof. The invention discloses a welding method of an aluminum honeycomb plate, which comprises the following steps: respectively removing aluminum honeycomb cores at positions to be connected of the two aluminum honeycomb plates to form a cavity structure; then, butt joint is carried out along the cavity structure to form an accommodating cavity, an aluminum row is arranged in the accommodating cavity, and the aluminum row props against the aluminum alloy panels of the two aluminum honeycomb plates; and welding along the joint of the aluminum alloy panel of the aluminum honeycomb panel by adopting friction stir welding. The welding method can finish longer welding seams at one time, and has high welding efficiency; the operation process is convenient to realize automation, the equipment is simple, and the energy consumption is low; welding wires or other auxiliary connecting materials are not needed in the connecting process, protective gas is not needed, and the connecting cost is low; the connection process is safe, pollution-free, smoke-free and radiation-free.
Description
Technical Field
The invention relates to the technical field of structural materials, in particular to an aluminum honeycomb plate and a welding method thereof.
Background
The aluminum honeycomb panel is composed of a honeycomb core and aluminum alloy panels on two sides, has the advantages of small density, high rigidity, good stability, sound insulation and heat insulation performance and the like, and is widely applied to the fields of aerospace, transportation, architectural decoration, military defense and the like. At present, aluminum honeycomb plates are mainly prepared by a glue joint method and a brazing method, a glue layer of the aluminum honeycomb plates prepared by the glue joint method is easy to crack or age under severe conditions of high temperature, humidity and the like, and the application of the aluminum honeycomb plates is also limited by adhesives. The brazing can realize the metallurgical connection of the aluminum alloy panel and the aluminum honeycomb core, has the process advantages of one-time assembly, short brazing time and the like, and is an ideal method for preparing the aluminum honeycomb plate.
At present, the aluminum honeycomb plate prepared by the brazing method is mainly brazed in a vacuum brazing or gas shielded furnace at the temperature higher than 600 ℃, the aluminum honeycomb plate is limited by the size of a furnace body, and the large-area aluminum honeycomb plate for the transportation and architectural decoration industries is usually formed by splicing a plurality of aluminum honeycomb plates. The common splicing method mainly comprises TIG welding, MIG welding, riveting and the like, the residual stress at the joint is large and not attractive, the structural bearing capacity of the aluminum honeycomb panel is seriously influenced, and potential safety hazards are easily caused.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a welding method of an aluminum honeycomb panel, which can finish a long welding seam at one time, has high welding efficiency, convenient operation process and low energy consumption, and realizes automation.
The second purpose of the invention is to provide the aluminum honeycomb plate obtained by the welding method of the aluminum honeycomb plate, the welding joint is beautiful, the microstructure change of a heat affected zone is small, the residual stress is low, and the panel of the aluminum honeycomb plate is not easy to deform.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
a welding method of aluminum honeycomb plates comprises the following steps:
respectively removing aluminum honeycomb cores at positions to be connected of the two aluminum honeycomb plates to form a cavity structure; then, butt joint is carried out along the cavity structure to form an accommodating cavity, an aluminum row is arranged in the accommodating cavity, and the aluminum row props against the aluminum alloy panels of the two aluminum honeycomb plates; and welding along the joint of the aluminum alloy panel of the aluminum honeycomb panel by adopting friction stir welding.
Preferably, the diameter of the top end of the stirring head for friction stir welding is 3-6 mm, the diameter of the shaft shoulder is 16-25 mm, and the length of the stirring pin is 2-6 mm.
Preferably, the diameter of the top end of the stirring head for friction stir welding is 4-5 mm, the diameter of the shaft shoulder is 18-20 mm, and the length of the stirring pin is 3-5 mm.
Preferably, the rotating speed of a stirring head of the friction stir welding is 800-1800 r/min, the welding speed is 600-1200 mm/min, and the welding pressure is 8000-15000N.
Preferably, the rotating speed of a stirring head of the friction stir welding is 1000-1500 r/min, the welding speed is 800-1000 mm/min, and the welding pressure is 10000-12000N.
Preferably, the two aluminum honeycomb panels are fixed by a pneumatic clamp.
Preferably, after the aluminum honeycomb cores at the positions to be connected of the two aluminum honeycomb plates are removed, a symmetrical cavity structure is formed;
preferably, the cavity structure is a rectangular cavity structure;
preferably, the length of the rectangular cavity structure is the length of the part to be connected of the aluminum honeycomb plate, the height of the aluminum honeycomb core is the height of the aluminum honeycomb core, and the width of the aluminum honeycomb core is 10-100 mm.
Preferably, the material of the aluminum row comprises at least one of 1050, 1060, 1070, 1100, 3003, 6061 and 6063.
Preferably, the material of the panel of the aluminum honeycomb plate comprises 6061 aluminum alloy and/or 6063 aluminum alloy;
preferably, the material of the aluminum honeycomb core comprises 1060 aluminum alloy and/or 1100 aluminum alloy.
The aluminum honeycomb plate is obtained by adopting the preparation method of the aluminum honeycomb plate.
Compared with the prior art, the invention has the beneficial effects that;
(1) the welding method can finish longer welding seams at one time, and has high welding efficiency; the operation process is convenient to realize automation, the equipment is simple, and the energy consumption is low; welding wires or other auxiliary connecting materials are not needed in the connecting process, protective gas is not needed, and the connecting cost is low; the connection process is safe, pollution-free, smoke-free and radiation-free.
(2) The welding joint of the aluminum honeycomb plate obtained by the invention is beautiful, the microstructure change of a heat affected zone is small, the residual stress is lower, and the panel of the aluminum honeycomb plate is not easy to deform.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an assembly structure of an aluminum honeycomb panel before connection according to the present invention;
FIG. 2 is a schematic view of the structure of the aluminum honeycomb panel after connection according to the present invention.
Reference numerals:
1-aluminum row, 2-aluminum alloy panel, 3-aluminum honeycomb core and 4-friction stir welding seam.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
A welding method of aluminum honeycomb plates comprises the following steps:
respectively removing aluminum honeycomb cores at positions to be connected of the two aluminum honeycomb plates to form a cavity structure; then, butt joint is carried out along the cavity structure to form an accommodating cavity, an aluminum row is arranged in the accommodating cavity, and the aluminum row props against the aluminum alloy panels of the two aluminum honeycomb plates; and welding along the joint of the aluminum alloy panel of the aluminum honeycomb panel by adopting friction stir welding.
At present, the aluminum honeycomb plate prepared by the brazing method is mainly brazed in a vacuum brazing or gas shielded furnace at the temperature higher than 600 ℃, the aluminum honeycomb plate is limited by the size of a furnace body, and the large-area aluminum honeycomb plate for the transportation and architectural decoration industries is usually formed by splicing a plurality of aluminum honeycomb plates. The common splicing method mainly comprises TIG welding, MIG welding, riveting and the like, the residual stress at the joint is large and not attractive, the structural bearing capacity of the aluminum honeycomb panel is seriously influenced, and potential safety hazards are easily caused.
Friction welding is a method in which the end portions are brought into a thermoplastic state by heat generated by mutual movement and friction of the end surfaces of workpieces, and then are rapidly upset forged to complete welding. The friction welding method has been used in the manufacturing industry for more than 40 years, has high productivity and good quality, but the welding objects are mainly rotary parts. In order to overcome the limitation of the geometry of the welded workpiece or improve the productivity, phase friction welding, radial friction welding, linear friction welding and the like are adopted, but the practical application is very few.
The friction stir welding method uses friction heat and plastic deformation heat as welding heat sources, and the friction stir welding process is that a cylindrical or other-shaped (such as a threaded cylinder) stirring pin extends into the joint of a workpiece and is rubbed with the material of the welded workpiece through high-speed rotation of a welding head, so that the temperature of the material at the connecting part is raised and softened, and meanwhile, the material is stirred and rubbed to complete the welding.
The invention adopts friction stir welding to weld, can finish longer welding seam at one time, and has high welding efficiency; the operation process is convenient to realize automation, the equipment is simple, and the energy consumption is low; welding wires or other auxiliary connecting materials are not needed in the connecting process, protective gas is not needed, and the connecting cost is low; the connection process is safe, pollution-free, smoke-free and radiation-free.
Preferably, the diameter of the top end of the stirring head for friction stir welding is 3-6 mm, the diameter of the shaft shoulder is 16-25 mm, and the length of the stirring pin is 2-6 mm.
According to the invention, the stirring head with a specific size is adopted, the diameter of the top end of the stirring head is 3-6 mm, the diameter of the shaft shoulder is 16-25 mm, and the length of the stirring needle is 2-6 mm, so that the aluminum honeycomb plate can be welded more favorably, the welded joint is attractive, the microstructure change of a heat affected zone is small, the residual stress is lower, the panel of the aluminum honeycomb plate is not easy to deform, and the welding efficiency is further improved.
In one embodiment, the diameter of the top end of the stirring head is 3-6 mm, and may be 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5mm, 5.1mm, 5.2mm, 5.3mm, 5.4mm, 5.5mm, 5.6mm, 5.7mm, 5.8mm, 5.9mm or 6 mm.
In one embodiment, the diameter of the shaft shoulder is 16-25 mm, and may be 16.5mm, 17mm, 17.5mm, 18mm, 18.5mm, 19mm, 19.5mm, 20mm, 20.5mm, 21mm, 21.5mm, 22mm, 22.5mm, 23mm, 23.5mm, 24mm, 24.5mm or 25 mm.
In one embodiment, the length of the stirring pin is 2-6 mm, and can also be 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm or 5.5 mm.
Preferably, the diameter of the top end of the stirring head for friction stir welding is 4-5 mm, the diameter of the shaft shoulder is 18-20 mm, and the length of the stirring pin is 3-5 mm.
By further optimizing the tip diameter, shoulder diameter and pin length of the pin, the welding of aluminum honeycomb panels can be facilitated.
Preferably, the rotating speed of a stirring head of the friction stir welding is 800-1800 r/min, the welding speed is 600-1200 mm/min, and the welding pressure is 8000-15000N.
The utility model provides a inject the stirring head rotational speed and be 800 ~ 1800r/min, and welding speed is 600 ~ 1200mm/min, and welding pressure is 8000 ~ 15000N, through mutually supporting of each condition, and then more be favorable to welding aluminium honeycomb panel, makes welded joint pleasing to the eye, and the heat affected zone micro-structure changes for a short time, and the residual stress ratio is lower, and aluminium honeycomb panel's panel non-deformable further improves welding efficiency.
In one embodiment, the rotating speed of the stirring head of the friction stir welding is 800-1800 r/min, and 800r/min, 850r/min, 900r/min, 950r/min, 1000r/min, 1050r/min, 1100r/min, 1150r/min, 1200r/min, 1250r/min, 1300r/min, 1350r/min, 1400r/min, 1450r/min, 1500r/min, 1550r/min, 1600r/min, 1650r/min, 1700r/min, 1750r/min or 1800r/min can be selected.
In one embodiment, the welding speed is 600-1200 mm/min, and 650700mm/min, 750mm/min, 800mm/min, 850mm/min, 900mm/min, 950mm/min, 1000mm/min, 1050mm/min, 1100mm/min, 1150mm/min or 1200mm/min can be selected.
In one embodiment, the welding pressure is 8000-15000N, and may be 8000N, 8500N, 9000N, 9500N, 10000N, 10500N, 11000N, 12000N, 13000N, 14000N or 15000N.
Preferably, the rotating speed of a stirring head of the friction stir welding is 1000-1500 r/min, the welding speed is 800-1000 mm/min, and the welding pressure is 10000-12000N.
Preferably, the two aluminum honeycomb panels are fixed by a pneumatic clamp.
Preferably, the two aluminum honeycomb panels form a symmetrical cavity structure after the aluminum honeycomb cores at the positions to be connected are removed.
According to the invention, the two aluminum honeycomb plates are preferably selected to form a symmetrical cavity structure after the aluminum honeycomb cores at the positions to be connected are removed, so that the stress is more uniform after welding, and the performance of the aluminum honeycomb plates is more excellent.
Preferably, the cavity structure is a rectangular cavity structure.
Preferably, the length of the rectangular cavity structure is the length of the part to be connected of the aluminum honeycomb plate, the height of the aluminum honeycomb core is the height of the aluminum honeycomb core, and the width of the aluminum honeycomb core is 10-100 mm.
In one embodiment, the width of the rectangular cavity structure is 10-100 mm, and may also be 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm or 100 mm.
Preferably, the material of the aluminum row comprises at least one of 1050, 1060, 1070, 1100, 3003, 6061 and 6063.
The aluminum bar is made of 99.97% high-purity aluminum bars serving as raw materials by advanced extrusion, leveling, saw cutting and other production processes, and the conductivity of the aluminum bar is guaranteed to be more than or equal to the national standard requirement. The aluminum bar adopted by the invention has the advantages of excellent interface characteristic, high strength, good workability and strong corrosion resistance.
The cavity structure of the accommodating cavity after the aluminum row is butted is tightly matched.
Preferably, the material of the panel of the aluminum honeycomb plate comprises 6061 aluminum alloy and/or 6063 aluminum alloy;
preferably, the material of the aluminum honeycomb plate comprises 1060 aluminum alloy and/or 1100 aluminum alloy.
6061 aluminum alloy is a high-quality aluminum alloy product produced by a heat treatment pre-stretching process, and has the characteristics of excellent processing performance, excellent welding characteristics, good corrosion resistance, high toughness, no deformation after processing, compact and defect-free material, easiness in polishing, easiness in coloring a film, excellent oxidation effect and the like.
The aluminum honeycomb plate is obtained by adopting the preparation method of the aluminum honeycomb plate.
The welding joint of the aluminum honeycomb plate obtained by the invention is beautiful, the microstructure change of a heat affected zone is small, the residual stress is lower, and the panel of the aluminum honeycomb plate is not easy to deform.
The present invention will be further explained with reference to specific examples and comparative examples.
Example 1
A welding method of aluminum honeycomb plates comprises the following steps:
the aluminum alloy panel 2 is made of 6061 aluminum alloy and has the size of 800mm x 2mm, and the aluminum honeycomb core 3 is made of 1060 aluminum plates with the size of 800mm x 100mm x 0.5mm selected from corrugated plates; removing aluminum honeycomb cores at the positions to be connected of the two brazing aluminum honeycomb plates by using a milling cutter to form a rectangular cavity structure with the symmetrical size of 50mm 100mm 800 mm; aluminum row 1 with the size of 100mm 800mm is inserted into a symmetrical rectangular cavity structure and forms tight fit; the method comprises the following steps of (1) compressing and fixing two brazing aluminum honeycomb plates by using a pneumatic clamp, taking the joint of the panels of the two aluminum honeycomb plates as a central line, carrying out friction stir welding on the panels of the two aluminum honeycomb plates, wherein the diameter of the top end of a stirring head of the friction stir welding is 3.0mm, the diameter of a shaft shoulder is 16mm, the length of a stirring pin is 2.0mm, the rotating speed of the stirring head is 1000r/min, the welding speed is 600mm/min, and the welding pressure is 10000N; after the welding of the upper panel is completed, the upper panel is turned over, friction stir welding connection is carried out on the lower panel in the same mode, and after the welding is completed, the brazing aluminum honeycomb panel is connected to obtain a friction stir welding seam 4.
The assembly structure before the connection of the aluminum honeycomb plate is shown in figure 1;
the structure of the connected aluminum honeycomb plate is schematically shown in figure 2.
Example 2
A welding method of aluminum honeycomb plates comprises the following steps:
the aluminum alloy panel 2 is made of 6063 aluminum alloy and has the size of 800mm x 2mm, and the aluminum honeycomb core 3 is made of a corrugated plate and is made of 1060 aluminum plates with the size of 800mm x 100mm x 0.5 mm. Removing aluminum honeycomb cores at the positions to be connected of the two brazing aluminum honeycomb plates by using a milling cutter to form a rectangular cavity structure with the symmetrical size of 50mm 100mm 800 mm; aluminum row 1 with the size of 100mm 800mm is inserted into a symmetrical rectangular cavity structure and forms tight fit; the method comprises the following steps of (1) compressing and fixing two brazing aluminum honeycomb plates by using a pneumatic clamp, taking the joint of the panels of the two aluminum honeycomb plates as a central line, carrying out friction stir welding on the panels of the two aluminum honeycomb plates, wherein the diameter of the top end of a stirring head of the friction stir welding is 3.0mm, the diameter of a shaft shoulder is 16mm, the length of a stirring pin is 2.0mm, the rotating speed of the stirring head is 1200r/min, the welding speed is 800mm/min, and the welding pressure is 12000N; after the upper panel is welded, turning over, performing friction stir welding connection on the lower panel in the same way, and after the welding is completed, completing the connection of the brazing aluminum honeycomb panel to obtain a friction stir welding seam 4;
the assembly structure before the connection of the aluminum honeycomb plate is shown in figure 1;
the structure of the connected aluminum honeycomb plate is schematically shown in figure 2.
Example 3
A welding method of aluminum honeycomb plates comprises the following steps:
the aluminum alloy panel 2 is made of 6061 aluminum alloy and has the size of 800mm x 2mm, and the aluminum honeycomb core 3 is made of a corrugated plate and is made of 1100 aluminum plates with the size of 800mm x 100mm x 0.5 mm. Removing aluminum honeycomb cores at the positions to be connected of the two brazing aluminum honeycomb plates by using a milling cutter to form a rectangular cavity structure with the symmetrical size of 50mm 100mm 800 mm; aluminum row 1 with the size of 100mm 800mm is inserted into a symmetrical rectangular cavity structure and forms tight fit; the method comprises the following steps of (1) compressing and fixing two brazing aluminum honeycomb plates by using a pneumatic clamp, taking the joint of the panels of the two aluminum honeycomb plates as a central line, carrying out friction stir welding on the panels of the two aluminum honeycomb plates, wherein the diameter of the top end of a stirring head of the friction stir welding is 3.0mm, the diameter of a shaft shoulder is 16mm, the length of a stirring pin is 2.0mm, the rotating speed of the stirring head is 1200r/min, the welding speed is 1000mm/min, and the welding pressure is 10000N; after the welding of upper panel is accomplished, the turn-over carries out friction stir welding to the lower panel with same mode and connects, and the welding is accomplished the back, accomplishes this aluminium honeycomb panel of brazing promptly and connects, obtains friction stir welding seam 4.
The assembly structure before the connection of the aluminum honeycomb plate is shown in figure 1;
the structure of the connected aluminum honeycomb plate is schematically shown in figure 2.
Example 4
A welding method of aluminum honeycomb plates comprises the following steps:
the aluminum alloy panel 2 is made of 6063 aluminum alloy and has the size of 800mm x 2mm, and the aluminum honeycomb core 3 is made of a corrugated plate and is made of 1100 aluminum plates with the size of 800mm x 100mm x 0.5 mm. Removing aluminum honeycomb cores at the positions to be connected of the two brazing aluminum honeycomb plates by using a milling cutter to form a rectangular cavity structure with the symmetrical size of 50mm 100mm 800 mm; aluminum row 1 with the size of 100mm 800mm is inserted into a symmetrical rectangular cavity structure and forms tight fit; the method comprises the following steps of (1) compressing and fixing two brazing aluminum honeycomb plates by using a pneumatic clamp, taking the joint of the panels of the two aluminum honeycomb plates as a central line, carrying out friction stir welding on the two brazing aluminum honeycomb plates, wherein the diameter of the top end of a stirring head of the friction stir welding is 4.0mm, the diameter of a shaft shoulder is 20mm, the length of a stirring pin is 3.0mm, the rotating speed of the stirring head is 900r/min, the welding speed is 1200mm/min, and the welding pressure is 10000N; after the welding of upper panel is accomplished, the turn-over carries out friction stir welding to the lower panel with same mode and connects, and the welding is accomplished the back, accomplishes this aluminium honeycomb panel of brazing promptly and connects, obtains friction stir welding seam 4.
The assembly structure before the connection of the aluminum honeycomb plate is shown in figure 1;
the structure of the connected aluminum honeycomb plate is schematically shown in figure 2.
Example 5
A welding method of aluminum honeycomb plates comprises the following steps:
the aluminum alloy panel 2 is made of 6061 aluminum alloy and has the size of 800mm x 2mm, and the aluminum honeycomb core 3 is made of a corrugated plate and is made of 1100 aluminum plates with the size of 800mm x 100mm x 0.5 mm. Removing aluminum honeycomb cores at the positions to be connected of the two brazing aluminum honeycomb plates by using a milling cutter to form a rectangular cavity structure with the symmetrical size of 50mm 100mm 800 mm; aluminum row 1 with the size of 100mm 800mm is inserted into a symmetrical rectangular cavity structure and forms tight fit; the method comprises the following steps of (1) compressing and fixing two brazing aluminum honeycomb plates by using a pneumatic clamp, taking the joint of the panels of the two aluminum honeycomb plates as a central line, carrying out friction stir welding on the two brazing aluminum honeycomb plates, wherein the diameter of the top end of a stirring head of the friction stir welding is 4.0mm, the diameter of a shaft shoulder is 20mm, the length of a stirring pin is 3.0mm, the rotating speed of the stirring head is 1500r/min, the welding speed is 1000mm/min, and the welding pressure is 12000N; after the welding of upper panel is accomplished, the turn-over carries out friction stir welding to the lower panel with same mode and connects, and the welding is accomplished the back, accomplishes this aluminium honeycomb panel of brazing promptly and connects, obtains friction stir welding seam 4.
The assembly structure before the connection of the aluminum honeycomb plate is shown in figure 1;
the structure of the connected aluminum honeycomb plate is schematically shown in figure 2.
Comparative example 1
The welding method of the aluminum honeycomb plate is the same as that of the embodiment 5 except that the diameter of the top end of the stirring head of the friction stir welding is 7mm, the diameter of the shaft shoulder is 30mm, and the length of the stirring pin is 7 mm.
Comparative example 2
A method for welding an aluminum honeycomb panel, except that the rotating speed of a stirring head of friction stir welding is 2000r/min, the welding speed is 500mm/min, the welding pressure is 7500N, and other conditions are the same as those of the embodiment 5.
Examples of the experiments
The tensile strength of the welding joint of the aluminum honeycomb plates obtained in the examples and the comparative examples is tested, the tensile strength of the welding joint of the aluminum honeycomb plate panel is determined according to the tensile test method of GB/T2651-2008 welding joint, and the test results are shown in the following table 1.
TABLE 1 weld joint tensile Strength test results
The welding method can finish longer welding seams at one time, and has high welding efficiency; the operation process is convenient to realize automation, the equipment is simple, and the energy consumption is low; welding wires or other auxiliary connecting materials are not needed in the connecting process, protective gas is not needed, and the connecting cost is low; the connection process is safe, pollution-free, smoke-free and radiation-free. The welding joint of the aluminum honeycomb plate obtained by the invention is beautiful, the microstructure change of a heat affected zone is small, the residual stress is lower, and the panel of the aluminum honeycomb plate is not easy to deform. The tensile strength of the welded joint of the aluminum honeycomb panel obtained by the specific method in the embodiment 1-5 is higher than that of the welded joint of the aluminum honeycomb panel obtained by the specific method in the comparative example 1 and the comparative example 2, namely the relevant condition parameters of friction stir welding are in the range given by the invention, and the welded joint has more excellent tensile strength.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A welding method of aluminum honeycomb plates is characterized by comprising the following steps:
respectively removing aluminum honeycomb cores at positions to be connected of the two aluminum honeycomb plates to form a cavity structure; then, butt joint is carried out along the cavity structure to form an accommodating cavity, an aluminum row is arranged in the accommodating cavity, and the aluminum row props against the aluminum alloy panels of the two aluminum honeycomb plates; and welding along the joint of the aluminum alloy panel of the aluminum honeycomb panel by adopting friction stir welding.
2. The method of welding aluminum honeycomb panels as claimed in claim 1, wherein the friction stir welding has a pin tip diameter of 3 to 6mm, a shoulder diameter of 16 to 25mm, and a pin length of 2 to 6 mm.
3. The method of welding aluminum honeycomb panels as claimed in claim 2, wherein the friction stir welding has a pin tip diameter of 4 to 5mm, a shoulder diameter of 18 to 20mm, and a pin length of 3 to 5 mm.
4. The method for welding aluminum honeycomb panels according to claim 1, wherein the rotational speed of the friction stir welding tool is 800 to 1800r/min, the welding speed is 600 to 1200mm/min, and the welding pressure is 8000 to 15000N.
5. The method for welding aluminum honeycomb panels as claimed in claim 4, wherein the rotational speed of the stirring head of the friction stir welding is 1000 to 1500r/min, the welding speed is 800 to 1000mm/min, and the welding pressure is 10000 to 12000N.
6. The method of welding aluminum honeycomb panels of claim 1 wherein the two aluminum honeycomb panels are secured using a pneumatic clamp.
7. The method for welding the aluminum honeycomb plates according to claim 1, wherein the aluminum honeycomb cores at the positions where the two aluminum honeycomb plates are to be connected are removed to form a symmetrical cavity structure;
preferably, the cavity structure is a rectangular cavity structure;
preferably, the length of the rectangular cavity structure is the length of the part to be connected of the aluminum honeycomb plate, the height of the aluminum honeycomb core is the height of the aluminum honeycomb core, and the width of the aluminum honeycomb core is 10-100 mm.
8. The method of welding aluminum honeycomb panels of claim 1 wherein the material of the aluminum row includes at least one of 1050, 1060, 1070, 1100, 3003, 6061, and 6063.
9. The method of welding aluminum honeycomb panels as claimed in claim 1, wherein the material of the face sheets of the aluminum honeycomb panels comprises 6061 aluminum alloy and/or 6063 aluminum alloy;
preferably, the material of the aluminum honeycomb core comprises 1060 aluminum alloy and/or 1100 aluminum alloy.
10. An aluminum honeycomb panel obtained by the method for welding an aluminum honeycomb panel according to any one of claims 1 to 9.
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| CN114406441A (en) * | 2022-02-24 | 2022-04-29 | 江西理工大学 | Friction stir welding method and device for honeycomb plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1147858A (en) * | 1997-08-05 | 1999-02-23 | Nippon Light Metal Co Ltd | Honeycomb panel and its manufacture |
| JP2000052063A (en) * | 1998-08-13 | 2000-02-22 | Sumitomo Light Metal Ind Ltd | Friction jointing method of honeycomb panel |
| CN101691978A (en) * | 2009-09-30 | 2010-04-07 | 重庆大学 | Aluminum honeycomb type evaporation plate and processing molding method thereof |
| CN102390017A (en) * | 2011-08-05 | 2012-03-28 | 罗键 | Milling-stirring friction welding combined machining device and near net shaping method of hollow molded cavity |
| CN208777542U (en) * | 2018-08-16 | 2019-04-23 | 江苏龙禾轻型材料有限公司 | A kind of honeycomb aluminum plate |
-
2020
- 2020-08-27 CN CN202010881220.5A patent/CN112008228A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1147858A (en) * | 1997-08-05 | 1999-02-23 | Nippon Light Metal Co Ltd | Honeycomb panel and its manufacture |
| JP2000052063A (en) * | 1998-08-13 | 2000-02-22 | Sumitomo Light Metal Ind Ltd | Friction jointing method of honeycomb panel |
| CN101691978A (en) * | 2009-09-30 | 2010-04-07 | 重庆大学 | Aluminum honeycomb type evaporation plate and processing molding method thereof |
| CN102390017A (en) * | 2011-08-05 | 2012-03-28 | 罗键 | Milling-stirring friction welding combined machining device and near net shaping method of hollow molded cavity |
| CN208777542U (en) * | 2018-08-16 | 2019-04-23 | 江苏龙禾轻型材料有限公司 | A kind of honeycomb aluminum plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114406441A (en) * | 2022-02-24 | 2022-04-29 | 江西理工大学 | Friction stir welding method and device for honeycomb plate |
| CN114406441B (en) * | 2022-02-24 | 2023-12-29 | 江西理工大学 | Friction stir welding method and device for honeycomb plate |
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